Obscertainer Investigation Lab- to be used with Lab Aids Obsertainer Kit TM
Turn scientific thinking into a hands-on mystery!
In this Obscertainer Investigation Lab, students use indirect observations to determine the hidden structure inside an Obscertainer. Because students cannot see inside the container, they must carefully observe the movement and sound of the steel ball, develop a hypothesis, test their ideas, and revise their model as they gather new evidence.
This activity gives students an opportunity to experience the scientific process in real time rather than simply identifying the steps on a worksheet. Students discover that an initial hypothesis may not be correct, new evidence can change an explanation, and scientific models are revised as our understanding improves.
Designed as a short 20–30 minute investigation, this resource works well with a range of learners and can be used as a stand-alone scientific thinking activity, enrichment lab, early-finisher activity, or follow-up to instruction on the scientific method.
Students Will Practice
Making direct and indirect observations
Using evidence to form a hypothesis
Testing a hypothesis
Repeating observations to improve reliability
Revising ideas based on new evidence
Developing and revising scientific models
Distinguishing evidence from assumptions
Explaining scientific reasoning
Understanding that an incorrect hypothesis does not mean an investigation has failed
What's Included
Student-friendly background information
Investigation problem and materials
Clear, concise procedures
Two Obscertainer investigations
Initial hypothesis and revised-model sections
Analysis and reflection questions
Multiple-choice scientific reasoning check
Post-reveal model comparison
Final reflection question
Perfect For
Grades 8–12 Science, including:
Physical Science • Chemistry • Physics • Earth Science • General Science • Introduction to Laboratory Science
This investigation is especially useful at the beginning of the school year when introducing scientific practices, experimental thinking, evidence, hypotheses, and models.
Estimated Time
20–30 minutes
Format
Individual or partner activity
Materials Required
LAB-AIDS® Obscertainers and basic classroom supplies
Please Note
This resource is an independently created student investigation designed for use with Obscertainer equipment. Obscertainers are not included with this resource.
